Dynamic testing of frequency relays

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:397845

Stringer, N T ^[1]

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1. Basler Electric Co., Highland, IL (United States)

Frequency relays are often applied on power systems either to protect generation equipment or provide load shedding capabilities. Accurate setting and operation of these relays is essential in the proper coordination of the power system equipment. Dynamic testing provides a method of assuring the proper operation of frequency relays. Along with this testing is a myriad of complexities and confusion. Dynamic tests are not always as straightforward as one might think, especially when the results are not as anticipated. The methods of testing, type of test equipment used, and the specific relay measuring techniques all play a significant This paper discusses the intricacies of dynamic frequency testing along with the differences between test equipment and frequency relays and how these differences affect the testing results. A sampling of four frequency relays was tested (three solid state devices and one electromechanical), each using four different test sets. Results of each will be discussed.

• OSTI ID: 397845
• Report Number(s): CONF-9505342--; ISBN 0-7803-2480-3
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
ELECTRICAL TESTING
FREQUENCY DEPENDENCE
PERFORMANCE TESTING
POWER SYSTEMS
RELAYS